Table 2.

Radiological findings in different types of pneumonia.

Chest X-ray
Virus	Typical Bacteria	Atypical Bacteria
Bilateral	Unilateral	Asymmetric
Central	Consolidation Bronchopneumonia	Non-homogeneus consolidation
Symmetric	Asymmetric	Alveolo-interstitial pattern
Interstitial ground-glass opacity	Alveolar pattern
Computed tomography
Virus	Typical Bacteria	Atypical Bacteria
Ground-glass opacities Centrilobular nodules Bronchial wall thickening Bilateral	Consolidation Lobar pneumonia Bronchogram	Ground-glass opacities Bronchovascular bundle thickening Reticular or linear opacities Unilateral
Lung ultrasound
Virus	Bacteria	Both
Alveolar-interstitial pattern	Consolidation: predominantly subpleural hypoechoic region or a hypoechoic region with liver-like density with usually irregular, non-rounded borders	B-lines: perpendicular to the pleural line and parallel to each other. Usually caused by decreased alveolar aeration and fluid accumulation under the visceral pleural, thickening of interlobular septa, mostly related to interstitial occupation
Combined with preserved areas	Air bronchogram: hyperechogenic tree-like images corresponding to air-filled bronchi	Often seen focally, multifocally or patchily in ground-glass opacities or around areas of consolidation